The Speed of Time How long does it take to read the time? How would you time time?These strange questions came to th... 2021-9-25 22:0:0 | 阅读: 11 | 收藏 | Brendan Gregg's Blog - www.brendangregg.com clocksource tsc flame xen

ZFS Is Mysteriously Eating My CPU A microservice team asked me for help with a mysterious issue. They claimed that the ZFS file syste... 2021-09-05 23:00:00 | 阅读: 42 | 收藏 | www.brendangregg.com zfs arc hits flame memory

ZFS Is Mysteriously Eating My CPU A microservice team asked me for help with a mysterious issue. They claimed that the ZFS file syste... 2021-9-5 22:0:0 | 阅读: 9 | 收藏 | Brendan Gregg's Blog - www.brendangregg.com zfs arc hits flame memory

Analyzing a High Rate of Paging These are rough notes.A service team was debugging a performance issue and noticed it coincided w... 2021-08-29 23:00:00 | 阅读: 30 | 收藏 | www.brendangregg.com rkb avgqu idle avgrq rrqm

Slack's Secret STDERR Messages These are rough notes.I run the Slack messaging application on Ubuntu Linux, and it recently star... 2021-08-26 23:00:00 | 阅读: 35 | 收藏 | www.brendangregg.com bgregg 3666477 snap pixbuf rtm

USENIX LISA2021 Computing Performance: On the Horizon It's an exciting time for developments in computer performance, not just for the BPF technology (wh... 2021-07-04 23:00:00 | 阅读: 71 | 收藏 | www.brendangregg.com gregg brendan shilov ddr5 chip

How To Add eBPF Observability To Your Product There's an arms race to add eBPF (BPF) to commercial observability products, and in this post I'll... 2021-07-02 23:00:00 | 阅读: 78 | 收藏 | www.brendangregg.com bcc bpftrace lc execsnoop

USENIX LISA2021 BPF Internals (eBPF) For USENIX LISA2021 I gave a 40 minute deep dive talk on BPF internals for Linux, focusing on obser... 2021-06-14 23:00:00 | 阅读: 62 | 收藏 | www.brendangregg.com usenix internals ebpf uapi gave

An Unbelievable Demo This is the story of the most unbelievable demo I've been given in world of open source. You can't... 2021-06-03 23:00:00 | 阅读: 70 | 收藏 | www.brendangregg.com dtrace australia australian tour

Moving my US tech job to Australia I've moved from the San Francisco Bay Area to Sydney, Australia, where I will continue the best job... 2021-05-28 23:00:00 | 阅读: 129 | 收藏 | www.brendangregg.com australia remote bay productive australian

What is Observability It's a made-up computer word that my word processor decorates with a wiggly red you-can't-spell lin... 2021-05-22 23:00:00 | 阅读: 144 | 收藏 | www.brendangregg.com observable stuck

Poor Disk Performance People often tell me they don't understand performance tool output because they can't tell what's "... 2021-5-8 14:0:0 | 阅读: 13 | 收藏 | www.brendangregg.com sdb 131072 16014 dust nvme0n1

BPF binaries: BTF, CO-RE, and the future of BPF perf tools Two new technologies, BTF and CO-RE, are paving the way for BPF to become a billion-dollar industry... 2020-11-04 17:00:00 | 阅读: 139 | 收藏 | www.brendangregg.com opensnoop btf bpftrace bcc python

Systems Performance: Enterprise and the Cloud, 2nd Edition Eight years ago I wrote Systems Performance: Enterprise and the Cloud (aka the "sysperf" book) o... 2020-07-15 16:00:00 | 阅读: 122 | 收藏 | www.brendangregg.com sysperf cloud chapter cpus

LISA2019 Linux Systems Performance Systems performance is an effective discipline for performance analysis and tuning, and can help yo... 2020-03-08 17:00:00 | 阅读: 131 | 收藏 | www.brendangregg.com workshop usenix heard tuning lisa

BPF Theremin, Tetris, and Typewriters For my AWS re:Invent talk on BPF Performance Analysis at Netflix, I began with a demo of "BPF super... 2019-12-22 17:00:00 | 阅读: 149 | 收藏 | www.brendangregg.com bpftrace strength pygame bcc iwl

BPF: A New Type of Software At Netflix we have 15 BPF programs running on cloud servers by default; Facebook has 40. These prog... 2019-12-02 17:00:00 | 阅读: 170 | 收藏 | www.brendangregg.com masters software alongside berkeley

Two kernel mysteries and the most technical talk I've ever seen If you start digging into Linux kernel internals, like function disassembly and profiling, you may... 2019-10-15 16:00:00 | 阅读: 165 | 收藏 | www.brendangregg.com recipes steven internals youtube profiling

A thorough introduction to bpftrace Originally posted at https:/opensource.com/article/19/8/introduction-bpftrace.bpftrace is a new o... 2019-08-18 23:00:00 | 阅读: 12 | 收藏 | www.brendangregg.com bpftrace bcc biolatency histogram tid

BPF Performance Tools: Linux System and Application Observability (book) BPF (eBPF) tracing is a superpower that can analyze everything, and I'll show you how in my upcomin... 2019-07-15 16:00:00 | 阅读: 139 | 收藏 | www.brendangregg.com bpftrace analysis ebpf bcc